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Magnetic field and temperature sensing with atomic-scale spin defects in silicon carbide

Please always quote using this URN: urn:nbn:de:bvb:20-opus-113025
  • Quantum systems can provide outstanding performance in various sensing applications, ranging from bioscience to nanotechnology. Atomic-scale defects in silicon carbide are very attractive in this respect because of the technological advantages of this material and favorable optical and radio frequency spectral ranges to control these defects. We identified several, separately addressable spin-3/2 centers in the same silicon carbide crystal, which are immune to nonaxial strain fluctuations. Some of them are characterized by nearly temperatureQuantum systems can provide outstanding performance in various sensing applications, ranging from bioscience to nanotechnology. Atomic-scale defects in silicon carbide are very attractive in this respect because of the technological advantages of this material and favorable optical and radio frequency spectral ranges to control these defects. We identified several, separately addressable spin-3/2 centers in the same silicon carbide crystal, which are immune to nonaxial strain fluctuations. Some of them are characterized by nearly temperature independent axial crystal fields, making these centers very attractive for vector magnetometry. Contrarily, the zero-field splitting of another center exhibits a giant thermal shift of −1.1 MHz/K at room temperature, which can be used for thermometry applications. We also discuss a synchronized composite clock exploiting spin centers with different thermal response.show moreshow less

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Metadaten
Author: Georgy V. Astakhov, Hannes Kraus, V. A. Soltamov, Franziska Fuchs, Dimitrij Simin, Andreas Sperlich, P. G. Baranov, Vladimir Dyakonov
URN:urn:nbn:de:bvb:20-opus-113025
Document Type:Journal article
Faculties:Fakultät für Physik und Astronomie / Physikalisches Institut
Language:English
Year of Completion:2014
Source:Scientific Reports 4, Article number: 5303. doi:10.1038/srep05303
DOI:https://doi.org/10.1038/srep05303
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Tag:condensed-matter physics; quantum physics
Release Date:2015/05/18
Collections:Open-Access-Publikationsfonds / Förderzeitraum 2014
Licence (German):License LogoCC BY-NC-ND: Creative-Commons-Lizenz: Namensnennung, Nicht kommerziell, Keine Bearbeitung